Coal mine ground fracture harmful gas collection and detection integrated device

Abstract

The invention discloses a coal mine ground fracture harmful gas collection and detection integrated device. The device comprises an explosion-proof box body and a box cover; the device further comprises a protection supporting mechanism, a sampling detection mechanism and a gas storage mechanism. The protection supporting mechanism comprises fixed supporting plates fixedly connected to the two sides of the explosion-proof box body and movable supporting plates movably connected to the fixed supporting plates. The sampling and detecting mechanism comprises a fixing through hole, a sampling cabin, a lifting assembly, a sealing assembly and a processing and detecting assembly, the sampling cabin is arranged in the explosion-proof box body and located over the fixing through hole, the lifting assembly is used for driving the sampling cabin to ascend and descend, and the processing and detecting assembly is used for detecting harmful gas after the harmful gas is filtered. The device has the beneficial effects that harmful gas can be detected, the concentration can be analyzed in real time, gas collection and detection functions are integrated, manual sampling and transportation links are reduced, the device adapts to a complex gas environment, the leakage risk of the harmful gas can be quickly identified, and the safety level of a mine is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine harmful gas collection and detection, more particularly to a coal mine ground fissure harmful gas collection and detection integrated device. BACKGROUND

[0002] The harmful gases that may be released by coal mine ground fissures mainly include carbon monoxide (CO), methane (CH4), sulfur dioxide (SO2), hydrogen sulfide (H2S), nitrogen oxides, and ammonia, which may pose a serious threat to the health of coal mine workers and even cause death.

[0003] The existing coal mine ground fissure harmful gas detection and collection are two devices, and a single device can only detect or collect harmful gases, which is inconvenient for operation by workers in the underground mine, has low sampling efficiency, high gas leakage risk, and inconvenient component detection, and the safety level of the mine is low. SUMMARY

[0004] In view of the above defects, the present application provides a coal mine ground fissure harmful gas collection and detection integrated device to solve the above problems.

[0005] To achieve the above purpose, the following technical solutions are adopted: A coal mine ground fissure harmful gas collection and detection integrated device, comprising an explosion-proof box body and a box cover, the explosion-proof box body is hinged with the box cover through a hinge; Further comprising: a protective support mechanism, a sampling and detection mechanism, and a gas storage mechanism; The protective support mechanism comprises fixed support plates fixedly connected on both sides of the explosion-proof box body, and movable support plates movably connected on the fixed support plates; The sampling and detection mechanism comprises a fixed through hole, a sampling cabin, a lifting assembly, a sealing assembly, and a processing and detection assembly, the fixed through hole is opened at the center of the bottom of the explosion-proof box body, the sampling cabin is arranged in the explosion-proof box body and located directly above the fixed through hole, the lifting assembly is used to drive the sampling cabin to lift, and the processing and detection assembly is used to detect the harmful gas after filtering.

[0006] As a preferred technical solution of the present application, the protective support mechanism further comprises a containing cavity arranged in the fixed support plate, guide sliding grooves are arranged on both sides of the containing cavity, positioning shafts are fixedly connected on both sides of the movable support plate, the positioning shafts are movably connected with the guide sliding grooves, a fixed opening communicating with the containing cavity is arranged on one side of the bottom of the fixed support plate, a magnetic attraction limiting plate is fixedly connected outside the fixed support plate, the magnetic attraction limiting plate is located above the fixed opening, the movable support plate is magnetically connected with the magnetic attraction limiting plate, and a ground nail hole is arranged at the end of the movable support plate.

[0007] As a preferred technical scheme of the present application, the lifting assembly comprises a turbine box fixedly installed at the inner top end of the explosion-proof box body, a bearing seat is installed at the inner bottom end of the explosion-proof box body, a threaded screw rod is connected between the output end of the turbine box and the bearing seat, a lifting sliding block is connected to the threaded screw rod, one end of the lifting sliding block is fixedly connected with the outer wall of the sampling cabin, an axle sleeve is communicated with the side wall of the explosion-proof box body, a rotating shaft is connected to the input end of the turbine box, the rotating shaft penetrates through the axle sleeve and extends out of the explosion-proof box body, and a hand wheel is fixedly connected to the end of the rotating shaft extending out of the explosion-proof box body.

[0008] As a preferred technical scheme of the present application, the sealing assembly comprises an air-filled sealing pad, a sealing bottom plate is fixedly connected to the bottom end of the sampling cabin, an air inlet through hole is arranged at the connection position of the sealing bottom plate and the sampling cabin, the diameter of the air inlet through hole is the same as the inner diameter of the sampling cabin, the air-filled sealing pad is fixedly connected to the bottom of the sealing bottom plate, guide sleeves are communicated with the two sides of the bottom of the explosion-proof box body, guide sliding rods are fixedly connected to the two sides of the surface of the sealing bottom plate, and the guide sliding rods are slidingly connected with the guide sleeves.

[0009] As a preferred technical scheme of the present application, the processing and detecting assembly comprises a multi-parameter gas sensor, a sealing partition plate is fixedly connected inside the sampling cabin, a glass fiber filter is fixedly connected to the bottom of the sealing partition plate, a plurality of air-permeable small holes are arranged at the connection position of the sealing partition plate and the glass fiber filter, a drying tube is communicated with the bottom of the glass fiber filter, an air inlet cover is communicated with the bottom of the drying tube, the outer wall of the air inlet cover is fixedly connected with the inner wall of the sampling cabin, two guide plates are fixedly connected above the sealing partition plate, a fixing rod is fixedly connected to the guide plates, and one end of the fixing rod is fixedly connected with the multi-parameter gas sensor.

[0010] As a preferred technical scheme of the present application, the air storage mechanism comprises an air storage tank, a containing groove is arranged on one side of the surface of the explosion-proof box body, the air storage tank is placed in the containing groove, a sampling pump is installed in the explosion-proof box body, an air suction pipe is communicated between the input end of the sampling pump and the sampling cabin, one end of the air suction pipe is located between the two guide plates, an air storage pipe is connected to the output end of the sampling pump, one end of the air storage pipe penetrates into the containing groove, the end of the air storage pipe penetrating into the containing groove is connected with the air storage tank, and a one-way valve is arranged at the connection position of the air storage pipe and the air storage tank.

[0011] As a preferred technical scheme of the present application, one side of the fixed supporting plate is provided with a vertical through groove, a locking screw rod is threadedly connected to the movable supporting plate, the locking screw rod is movably connected with the vertical through groove, a plurality of limiting round holes are arranged on one side of the inner wall of the containing cavity, and one end of the locking screw rod penetrates through the movable supporting plate and is movably connected with the limiting round hole.

[0012] As a preferred technical solution of the present invention, a wireless transmission module is installed in the explosion-proof box, an LED display screen is provided on the box cover, and an alarm is provided on the box cover.

[0013] As an optimal technical solution of the present invention, two guide rails are installed inside the explosion-proof box. The two guide rails are located on both sides of the sampling cabin. Guide sliders are fixedly connected to both sides of the sampling cabin, and the guide sliders are slidably connected to the guide rails.

[0014] The beneficial effects of the present invention are: the explosion-proof box body is supported and fixed by the fixed support plate and the movable support plate, and when not in use, the inflatable sealing cushion is protected by the movable support plate, thereby avoiding damage to the inflatable sealing cushion when storing or taking the device, avoiding air leakage of the inflatable sealing cushion, and improving the service life.

[0015] The sampling cabin and the sealing assembly are driven to rise and fall by the lifting assembly, and the inflatable sealing pad fits well with the opening of the ground fissure, thereby preventing the escape of gas when collecting harmful gases and improving the collection effect.

[0016] Harmful gases are guided through the air intake hood, and moisture in the gas is removed through the drying tube to avoid interference with subsequent detection. Dust, particulate matter and other impurities in the gas are removed through the glass fiber filter to prevent clogging of the pipeline or pollution of the sensor. Under the guidance of the two guide plates, the gas is surrounded by the multi-parameter gas sensor. The multi-parameter gas sensor is used to detect harmful gases, which can detect CO, CH4, CO2, etc. The concentration can be analyzed in real time, and the simultaneous detection of multiple components such as gas, CO, CO2, etc. is supported. It adapts to complex gas environments and is suitable for daily monitoring of ground fissures such as coal mine goafs and surface collapse areas. It can quickly identify the risk of harmful gas leakage and improve the safety level of mines.

[0017] Harmful gases are collected through gas tanks, which makes it easy to take out and replace the gas tanks. The gas tanks can be brought back to the ground for chromatographic analysis of the harmful gases, which improves work efficiency, integrates gas collection and detection functions, and reduces manual sampling and transportation links. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an integrated device for collecting and detecting harmful gases from coal mine ground fissures according to the present invention; Figure 2 is a diagram of the deployed state of the protective support mechanism; Figure 3 is an enlarged sectional view of the protective support mechanism; Figure 4 is a side view of the protective support mechanism; Figure 5 is an enlarged bottom view of the sealing assembly; Figure 6 is an enlarged sectional view of the processing and detecting assembly; Figure 7 is a partial top view of the gas storage mechanism; Figure 8 is a partial bottom view of the lifting assembly; In the figure, 1 is an explosion-proof box body; 2 is a box cover; 3 is a fixed support plate; 4 is a movable support plate; 5 is a fixed through hole; 6 is a sampling cabin; 7 is a lifting assembly; 8 is a sealing assembly; 9 is a processing and detecting assembly; 10 is a containing cavity; 11 is a guide sliding groove; 12 is a positioning shaft; 13 is a fixed opening; 14 is a magnetic attraction limiting plate; 15 is a ground nail hole; 16 is a turbine box; 17 is a bearing seat; 18 is a threaded screw rod; 19 is a lifting sliding block; 20 is a shaft sleeve; 21 is a rotating shaft; 22 is a hand wheel; 23 is an inflation sealing gasket; 24 is a sealing bottom plate; 25 is an air inlet through hole; 26 is a sampling cabin; 27 is a guide sliding rod; 28 is a multi-parameter gas sensor; 29 is a sealing partition plate; 30 is a glass fiber filter; 31 is a gas permeable small hole; 32 is a drying tube; 33 is an air inlet cover; 34 is a guide plate; 35 is a fixed rod; 36 is a gas storage tank; 37 is a containing groove; 38 is a sampling pump; 39 is an air exhaust pipe; 40 is a gas storage pipe; 41 is a one-way valve; 42 is a vertical through slot; 43 is a locking screw; 44 is a limiting circular hole; 45 is a wireless transmission module; 46 is an LED display screen; 47 is an alarm; 48 is a guide sliding rail; 49 is a guide sliding block. DETAILED DESCRIPTION

[0019] In order to make the above objectives, characteristics and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0020] The embodiment of the present application provides a coal mine ground fissure harmful gas collecting and detecting integrated device, please refer to Figures 1-8 : including an explosion-proof box body 1 and a box cover 2, the explosion-proof box body 1 is hinged with the box cover 2 through a hinge; Further comprising: a protective support mechanism, a sampling and detecting mechanism and a gas storage mechanism; The protective support mechanism comprises fixed support plates 3 fixedly connected on both sides of the explosion-proof box body 1, and movable support plates 4 movably connected on the fixed support plates 3; The sampling detection mechanism comprises a fixed through hole 5, a sampling cabin 6, a lifting assembly 7, a sealing assembly 8 and a processing and detection assembly 9. The fixed through hole 5 is arranged at the center of the bottom of the explosion-proof box body 1. The sampling cabin 6 is arranged in the explosion-proof box body 1 and located directly above the fixed through hole 5. The lifting assembly 7 is used to drive the sampling cabin 6 to lift. The processing and detection assembly 9 is used to detect the harmful gas after filtering.

[0021] In actual application, the explosion-proof box body 1 is placed above the coal mine ground fissure. The operator lifts the explosion-proof box body 1 and unfolds the protective support mechanism. The explosion-proof box body 1 is supported by the protective support mechanism. When not in use, the sealing assembly 8 is protected by the protective support mechanism. After the protective support mechanism is unfolded and fixed, the sampling cabin 6 is driven to descend by the lifting assembly 7. The sampling cabin 6 extends out of the explosion-proof box body 1 through the fixed through hole 5. The sampling cabin 6 drives the sealing assembly 8 to descend during the descending process. The sealing assembly 8 contacts the ground. The sealing assembly 8 is attached to the ground fissure opening to avoid gas dispersion during the collection of harmful gas, thereby improving the collection effect. The harmful gas is detected by the processing and detection assembly 9. CO, CH4, CO2 and the like can be detected. The concentration can be analyzed in real time. The harmful gas is collected by the gas storage mechanism. The gas collection and detection functions are integrated, the manual sampling and transportation links are reduced, the simultaneous detection of multiple components such as gas, CO and CO2 is supported, the complex gas environment is adapted, the ground fissure in the coal mine goaf, the ground surface subsidence area and the like are suitable for daily monitoring, the harmful gas leakage risk can be quickly identified, and the mine safety level is improved.

[0022] The drawings referred to in the specification are as follows: Figure 1 The drawings referred to in the specification are as follows: Figure 2 The drawings referred to in the specification are as follows: Figure 3 The drawings referred to in the specification are as follows: Figure 4 The protective support mechanism further comprises a containing cavity 10 arranged in the fixed support plate 3. Guiding sliding grooves 11 are arranged on both sides of the containing cavity 10. Positioning shafts 12 are fixedly connected to both sides of the movable support plate 4. The positioning shafts 12 are movably connected with the guiding sliding grooves 11. A fixed opening 13 is arranged on one side of the bottom of the fixed support plate 3 and communicates with the containing cavity 10. A magnetic attraction limiting plate 14 is fixedly connected to the outer side of the fixed support plate 3 and located above the fixed opening 13. The movable support plate 4 is magnetically connected with the magnetic attraction limiting plate 14. A ground nail hole 15 is arranged at the end of the movable support plate 4.

[0023] Specifically in practical application, when not in use, the two movable supporting plates 4 are in a horizontal state, the movable supporting plates 4 are magnetically connected with the magnetic attraction limiting plate 14, and the ground nails are inserted into the ground nail holes 15 on the two movable supporting plates 4 to fix the two movable supporting plates 4, so that the two movable supporting plates 4 are always in a horizontal state, avoiding that the movable supporting plates 4 are disconnected with the magnetic attraction limiting plate 14, and the two movable supporting plates 4 are horizontally located below the inflatable sealing gasket 23, the inflatable sealing gasket 23 is protected by the movable supporting plates 4, avoiding that the inflatable sealing gasket 23 is damaged when the device is stored or taken, avoiding that the inflatable sealing gasket 23 leaks, and prolonging the service life. When in use, the operator lifts the explosion-proof box body 1, takes out the ground nails from the ground nail holes 15, rotates the two movable supporting plates 4 through the positioning shaft 12, disconnects the movable supporting plates 4 with the magnetic attraction limiting plate 14, and the movable supporting plates 4 are in a vertical state. The explosion-proof box body 1 is placed downward, the movable supporting plates 4 move along the containing cavity 10, the movable supporting plates 4 drive the positioning shaft 12 to slide along the guide sliding groove 11, the explosion-proof box body 1 is supported by the fixed supporting plate 3 and the movable supporting plate 4, the ground nails are inserted into the ground nail holes 15, and the ground nails are inserted into the ground to be fixed by knocking the ground nails with a tool, so that the explosion-proof box body 1 is fixed above the coal mine ground fissure.

[0024] Referring to the drawings accompanying the specification Figure 1 and the drawings accompanying the specification Figure 2 , the lifting assembly 7 includes a turbine box 16 fixedly installed at the top end inside the explosion-proof box body 1, a bearing seat 17 installed at the bottom end inside the explosion-proof box body 1, a threaded screw rod 18 connected between the output end of the turbine box 16 and the bearing seat 17, a lifting sliding block 19 connected on the threaded screw rod 18, one end of the lifting sliding block 19 fixedly connected with the outer wall of the sampling cabin 6, a shaft sleeve 20 communicated with the side wall of the explosion-proof box body 1, a rotating shaft 21 connected with the input end of the turbine box 16, the rotating shaft 21 penetrating through the shaft sleeve 20 and extending out of the explosion-proof box body 1, and a hand wheel 22 fixedly connected with one end of the rotating shaft 21 extending out of the explosion-proof box body 1.

[0025] Specifically in practical application, the rotating shaft 21 is rotated by the hand wheel 22, the threaded screw rod 18 is rotated by the turbine box 16, the threaded screw rod 18 is rotated on the bearing seat 17, the threaded screw rod 18 drives the lifting sliding block 19 to drive the sampling cabin 6 to lift, and the sampling cabin 6 drives the lifting assembly 7 to lift at the same time, so that the height is adjusted and the use is facilitated.

[0026] Referring to the drawings accompanying the specification Figure 1 , the drawings accompanying the specification Figure 2 and the drawings accompanying the specification Figure 5, the sealing assembly 8 includes the inflatable sealing pad 23, the sampling cabin 6 is fixedly connected with the sealing bottom plate 24 at the bottom end, the connecting part of the sealing bottom plate 24 and the sampling cabin 6 is provided with the air inlet through hole 25, the diameter of the air inlet through hole 25 is the same as the inner diameter of the sampling cabin 6, the inflatable sealing pad 23 is fixedly connected at the bottom of the sealing bottom plate 24, the bottom of the explosion-proof box body 1 is communicated with the guide sleeve 26 at both sides, the sealing bottom plate 24 is fixedly connected with the guide sliding rod 27 at both sides of the surface, and the guide sliding rod 27 is slidably connected with the guide sleeve 26.

[0027] Specifically in actual application, when the sampling cabin 6 descends, the sampling cabin 6 drives the sealing bottom plate 24 and the inflatable sealing pad 23 to descend, the sealing bottom plate 24 drives the guide sliding rod 27 to slide along the guide sleeve 26, the guide sliding rod 27 guides the sealing bottom plate 24, the sealing bottom plate 24 drives the inflatable sealing pad 23 to descend and contact the ground, the inflatable sealing pad 23 is attached to the ground fissure opening, so that the harmful gas is prevented from escaping when the harmful gas is collected, and the collection effect is improved; the harmful gas enters the sampling cabin 6 through the air inlet through hole 25.

[0028] Referring to the drawings in the specification Figure 6 , the processing and detection assembly 9 includes the multi-parameter gas sensor 28, the sampling cabin 6 is fixedly connected with the sealing partition plate 29 inside, the sealing partition plate 29 is fixedly connected with the glass fiber filter 30 at the bottom, a plurality of air permeable small holes 31 are arranged at the connecting part of the sealing partition plate 29 and the glass fiber filter 30, the glass fiber filter 30 is communicated with the drying pipe 32 at the bottom, the drying pipe 32 is communicated with the air inlet cover 33 at the bottom, the outer wall of the air inlet cover 33 is fixedly connected with the inner wall of the sampling cabin 6, the sealing partition plate 29 is fixedly connected with the two guide plates 34 above, the fixed rod 35 is fixedly connected with the multi-parameter gas sensor 28 at one end.

[0029] Specifically in actual application, when the harmful gas is collected and detected, the harmful gas is guided through the air inlet cover 33, the harmful gas first enters the drying pipe 32, and the moisture in the gas is removed through the drying pipe 32, so that the subsequent detection is prevented from being disturbed, the gas enters the glass fiber filter 30, and the dust, particulate matter and other impurities in the gas are removed, so that the pipeline is prevented from being blocked or the sensor is prevented from being polluted, the gas passes through the air permeable small holes 31 and enters above the sealing partition plate 29, under the guidance of the two guide plates 34, the gas is around the multi-parameter gas sensor 28, and the harmful gas is detected through the multi-parameter gas sensor 28, so that CO, CH4, CO2 and the like can be detected, the concentration can be analyzed in real time, and the detection effect is improved.

[0030] Referring to the drawings in the specification Figure 1 , the specification Figure 2 and the specification Figure 7The gas storage mechanism comprises a gas storage tank 36, the explosion-proof box body 1 is provided with a containing groove 37 on one side of the surface, the gas storage tank 36 is placed in the containing groove 37, a sampling pump 38 is installed in the explosion-proof box body 1, a gas suction pipe 39 is in communication between the input end of the sampling pump 38 and the sampling cabin 6, one end of the gas suction pipe 39 is located between the two guide plates 34, the output end of the sampling pump 38 is connected with a gas storage pipe 40, one end of the gas storage pipe 40 penetrates into the containing groove 37, the end of the gas storage pipe 40 penetrating into the containing groove 37 is connected with the gas storage tank 36, and a one-way valve 41 is arranged at the connection position of the gas storage pipe 40 and the gas storage tank 36.

[0031] Specifically in actual application, the sampling pump 38 starts to work, harmful gas is extracted through the gas suction pipe 39, the sampling cabin 6 generates negative pressure to adsorb harmful gas in the ground fissure, the harmful gas filtered and detected enters the gas storage tank 36, the harmful gas is collected through the gas storage tank 36, the gas in the gas storage tank 36 is prevented from overflowing through the one-way valve 41, the gas storage tank 36 is placed in the containing groove 37, the gas storage tank 36 is convenient to take and replace, the harmful gas can be taken back to the ground for chromatographic analysis, the working efficiency is improved, the gas collection and detection functions are integrated, and the manual sampling and transportation links are reduced.

[0032] Referring to the drawings in the specification Figure 3 One side of the fixed supporting plate 3 is provided with a vertical through groove 42, the movable supporting plate 4 is threadedly connected with a locking screw rod 43, the locking screw rod 43 is movably connected with the vertical through groove 42, a plurality of limiting round holes 44 are arranged on one side of the inner wall of the containing cavity 10, and one end of the locking screw rod 43 penetrates through the movable supporting plate 4 and is movably connected with the limiting round hole 44.

[0033] Specifically in actual application, after the movable supporting plate 4 is rotated to the vertical state, the locking screw rod 43 is located directly below the vertical through groove 42, when the movable supporting plate 4 moves, the locking screw rod 43 slides along the vertical through groove 42, after the height is adjusted, the locking screw rod 43 is rotated, one end of the locking screw rod 43 is inserted into the limiting round hole 44, and the movable supporting plate 4 and the fixed supporting plate 3 are integrated, so that the operation is convenient and the fixing is convenient.

[0034] Referring to the drawings in the specification Figure 1 and the drawings in the specification Figure 2 A wireless transmission module 45 is installed in the explosion-proof box body 1, an LED display screen 46 is arranged on the box cover 2, and an alarm 47 is arranged on the box cover 2.

[0035] Specifically in actual application, the composition and concentration of the harmful gas can be displayed through the LED display screen 46, when the concentration exceeds the set value, the alarm 47 flashes to alarm, the harmful gas leakage risk can be quickly identified, and the mine safety level is improved.

[0036] Referring to the accompanying drawings and the description, two guide sliding rails 48 are arranged in the explosion-proof box body 1, and the two guide sliding rails 48 are located on both sides of the sampling cabin 6. The sampling cabin 6 is fixedly connected with guide sliding blocks 49 on both sides, and the guide sliding blocks 49 are in sliding connection with the guide sliding rails 48.

[0037] Specifically in actual application, when the sampling cabin 6 is lifted, the sampling cabin 6 drives the guide sliding blocks 49 to slide along the guide sliding rails 48, and the guide sliding blocks 49 guide the sampling cabin 6 through the guide sliding rails 48, so as to avoid the position deviation of the sampling cabin 6.

[0038] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the description.

[0039] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0042] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixing" should be construed as broad terms, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0044] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

Claims

1. A coal mine ground fissure harmful gas collection and detection integrated device, comprising an explosion-proof box body (1) and a box cover (2), the explosion-proof box body (1) is hinged with the box cover (2) through a hinge; characterized in that Further comprising: a protective support mechanism, a sampling and detection mechanism, and a gas storage mechanism; The protective support mechanism comprises fixed support plates (3) fixedly connected on both sides of the explosion-proof box body (1), and movable support plates (4) movably connected on the fixed support plates (3); The sampling and detection mechanism comprises fixed through holes (5), a sampling cabin (6), a lifting assembly (7), a sealing assembly (8), and a processing and detection assembly (9), the fixed through holes (5) are opened at the center of the bottom of the explosion-proof box body (1), the sampling cabin (6) is arranged in the explosion-proof box body (1) and located directly above the fixed through holes (5), the lifting assembly (7) is used to drive the sampling cabin (6) to lift and lower, and the processing and detection assembly (9) is used to detect the harmful gas after filtering.

2. The coal mine ground fissure harmful gas collecting and detecting integrated device according to claim 1, characterized in that, The protective support mechanism further comprises a containing cavity (10) arranged in the fixed support plate (3), guide sliding grooves (11) are arranged on both sides of the containing cavity (10), positioning shafts (12) are fixedly connected on both sides of the movable support plate (4), the positioning shafts (12) are movably connected with the guide sliding grooves (11), one side of the bottom of the fixed support plate (3) is provided with a fixed opening (13) in communication with the containing cavity (10), a magnetic attraction limiting plate (14) is fixedly connected to the outside of the fixed support plate (3), the magnetic attraction limiting plate (14) is located above the fixed opening (13), the movable support plate (4) is magnetically connected with the magnetic attraction limiting plate (14), and a ground nail hole (15) is arranged at the end of the movable support plate (4).

3. The coal mine ground fissure harmful gas collecting and detecting integrated device according to claim 1, characterized in that, The lifting assembly (7) comprises a turbine box (16) fixedly installed at the top end inside the explosion-proof box body (1), a bearing seat (17) is installed at the bottom end inside the explosion-proof box body (1), a threaded lead screw (18) is connected between the output end of the turbine box (16) and the bearing seat (17), a lifting sliding block (19) is connected to the threaded lead screw (18), one end of the lifting sliding block (19) is fixedly connected with the outer wall of the sampling cabin (6), an axle sleeve (20) is in communication with the side wall of the explosion-proof box body (1), a rotating shaft (21) is connected to the input end of the turbine box (16), the rotating shaft (21) penetrates through the axle sleeve (20) and extends out of the explosion-proof box body (1), and a hand wheel (22) is fixedly connected to the end of the rotating shaft (21) extending out of the explosion-proof box body (1).

4. The coal mine ground fissure harmful gas collecting and detecting integrated device according to claim 1, characterized in that, The sealing assembly (8) comprises an air inflation sealing pad (23), a sealing bottom plate (24) is fixedly connected to the bottom end of the sampling cabin (6), an air inlet through hole (25) is arranged at the connection position between the sealing bottom plate (24) and the sampling cabin (6), the diameter of the air inlet through hole (25) is the same as the inner diameter of the sampling cabin (6), the air inflation sealing pad (23) is fixedly connected to the bottom of the sealing bottom plate (24), guide sleeves (26) are in communication with both sides of the bottom of the explosion-proof box body (1), guide sliding rods (27) are fixedly connected to both sides of the surface of the sealing bottom plate (24), and the guide sliding rods (27) are slidingly connected with the guide sleeves (26).

5. The coal mine ground fissure harmful gas collecting and detecting integrated device according to claim 1, characterized in that, The processing detection assembly (9) includes a multi-parameter gas sensor (28), the sampling cabin (6) is internally connected with a sealed partition plate (29), the bottom of the sealed partition plate (29) is fixedly connected with a glass fiber filter (30), a plurality of air permeable small holes (31) are arranged at the connection between the sealed partition plate (29) and the glass fiber filter (30), the bottom of the glass fiber filter (30) is communicated with a drying tube (32), the bottom of the drying tube (32) is communicated with an air inlet cover (33), the outer wall of the air inlet cover (33) is fixedly connected with the inner wall of the sampling cabin (6), two guide plates (34) are fixedly connected above the sealed partition plate (29), a fixed rod (35) is fixedly connected to the guide plate (34), and one end of the fixed rod (35) is fixedly connected with the multi-parameter gas sensor (28).

6. The coal mine ground fissure harmful gas collecting and detecting integrated device according to claim 5, characterized in that, The gas storage mechanism includes a gas storage tank (36), and the surface of the explosion-proof box body (1) is provided with a containing groove (37); the gas storage tank (36) is placed in the containing groove (37); the sampling pump (38) is installed in the explosion-proof box body (1); the input end of the sampling pump (38) is communicated with the sampling cabin (6) through an air suction pipe (39); one end of the air suction pipe (39) is located between the two guide plates (34); the output end of the sampling pump (38) is connected with a gas storage pipe (40); one end of the gas storage pipe (40) penetrates into the containing groove (37); the end of the gas storage pipe (40) penetrating into the containing groove (37) is connected with the gas storage tank (36); and a one-way valve (41) is arranged at the connection between the gas storage pipe (40) and the gas storage tank (36).

7. The coal mine ground fissure harmful gas collecting and detecting integrated device according to claim 2, characterized in that, One side of the fixed supporting plate (3) is provided with a vertical through groove (42), the locking screw rod (43) is threadedly connected to the movable supporting plate (4), the locking screw rod (43) is movably connected with the vertical through groove (42), a plurality of limiting round holes (44) are arranged on one side of the inner wall of the containing cavity (10), and one end of the locking screw rod (43) penetrates through the movable supporting plate (4) and is movably connected with the limiting round hole (44).

8. The coal mine ground fissure harmful gas collecting and detecting integrated device according to claim 1, characterized in that, The explosion-proof box body (1) is internally provided with a wireless transmission module (45), the box cover (2) is provided with an LED display screen (46), and the box cover (2) is provided with an alarm (47).

9. The coal mine ground fissure harmful gas collecting and detecting integrated device according to claim 3, characterized in that, The explosion-proof box body (1) is internally provided with two guide sliding rails (48), the two guide sliding rails (48) are located on both sides of the sampling cabin (6), guide sliding blocks (49) are fixedly connected to both sides of the sampling cabin (6), and the guide sliding blocks (49) are slidably connected with the guide sliding rails (48).

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